Home / 199,988-281,272

Finding the Third Proportional to 199,988 and 281,272

Calculator

Solution

The third proportional to 199,988 and 281,272 is: 395,593.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,988 : 281,272 = 281,272 : x
  2. Step 2: Convert to fraction form
    199,988/281,272 = 281,272/x
  3. Step 3: Cross multiply
    199,988x = 281,272 × 281,272
  4. Step 4: Simplify right side
    199,988x = 79,113,937,984
  5. Step 5: Solve for x
    x = 79,113,937,984/199,988
  6. Step 6: Final answer
    x = 395,593.43

Related Problems

Find third proportional to 99,994 and 140,636
Half scale
Find third proportional to 399,976 and 562,544
Double scale
Find third proportional to 199,990 and 281,275
Similar ratio
Find third proportional to 299,982 and 421,908
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.